[DeTomaso] Colotti 4 speed
L GRAY
tipo874a at msn.com
Sun Mar 2 14:16:03 EST 2014
Ok , my iPhone just went nuts and included Mikes picture of Pantera SI suspension for some reason !!!
Any way, the open top car has the Indy V-8 with 48IDA Weber carbs on it. I'll try to get some pics next week.
Leslie A. Gray
> On Mar 2, 2014, at 10:42 AM, MikeLDrew at aol.com wrote:
>
> In a message dated 3/2/14 8 03 21, gaino at earthlink.net writes:
>
> http://www.mecum.com/auctions/lot_detail.cfm?LOT_ID=HA0414-184930&ut
> m_source=emv&utm_medium=email&utm_campaign=HA0414-S147.1 I never
> heard of a Colloti 4 speed?
>
>>>> That was the Achilles heel of the original GT40.
> The GT40 was built in a hurry, and at the time the only available
> gearbox that would seem to do the job was an Italian four-speed. It
> quickly showed that it was not up to the task, and Ford arranged for ZF
> in Germany to design and build an all-new purpose-built gearbox for the
> GT40. The thing is, there was a bureaucratic hangup, and the contract
> was never finalized but Ford apparently didn't know it. So seven
> months went by, and Ford finally asked, "Where are our gearboxes" and
> ZF's reply was "What gearboxes? You never actually placed the order?"
> Or something like that.
> So the cars had to suffer even longer with the woeful Colotti unit.
> Once the ZFs arrived, there was no looking back.
> The small-block cars would often fail to finish races due to head
> gasket failure; it took years for Ford to crack that nut. In the
> interim they shifted gears (figuratively speaking) and went for a
> big-block 427 solution. They believed the ZF was incapable of handling
> the torque, and so they designed and built their own four-speed
> transaxle (made by Kar Kraft), which utilized standard Ford toploader
> four-speed gearbox internals.
> Ironically, due to improper heat treatment of some gears, initially the
> Kar Kraft gearboxes failed and put the cars out. But once that minor
> niggle was sorted, they became unbeatable. Which is why the rules were
> changed to simply outlaw large displacement, which effectively outlawed
> the GT40.
> Who would have guessed that Ford (well, actually Ford was pretty much
> out of the GT40 business by then, and it was really John Wyer
> Associates, JWA) then would have spiffed up the by-now-old and
> always-overweight GT40, fit it with wider wheels and bigger brakes, and
> a more thoroughly developed 302 engine, and go on to win for two more
> years?
> Mike
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